Methods, systems and compositions for a green sorption media for bioretention soil amendments in drainfields for on-site waste water systems filled with the green sorption media to foster an anaerobic or anoxic environment saturated. The green sorption media includes one or more recycled materials, including...http://www.google.es/patents/US7955507?utm_source=gb-gplus-sharePatente US7955507 - Functionalized green filtration media for passive underground drainfield for septic tank nutrient removal
Functionalized green filtration media for passive underground drainfield for ...
